Although the video quality is quite poor, at 0:06, 0:30 and 0:41 these hiccups can be clearly seen. I've installed the latest drivers from Lenovo's website, upgraded the BIOS to Version 8JCN50WW, tried to use external display (via HDMI). Despite all my efforts to eliminate this problem, it still persists. It drives me nuts! Any ideas how to resolve it? I would really appreciate any suggestions.